//
//  NSString+UDID.m
//  TrainFinder
//
//  Created by ikamobile on 13-11-19.
//
//

#import "NSString+Identifier.h"
#import <AdSupport/AdSupport.h>
#import "SimulateIDFA.h"

#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>

#import "UserKeyChain.h"
#define KEY_CUSTOMEID @"com.ikamobile.trainfinder.raoshoujian"

@implementation NSString (Identifier)

+ (NSString *)idfaString{
    NSString * strUUID = (NSString *)[UserKeyChain load:KEY_CUSTOMEID];
    if (strUUID.length) {
        return strUUID;
    }else{
        strUUID = [SimulateIDFA createSimulateIDFA];
        [UserKeyChain save:KEY_CUSTOMEID data:strUUID];
        return strUUID;
    }
}

+ (NSString *)macAddressString{
    int                    mib[6];
    size_t                len;
    char                *buf;
    unsigned char        *ptr;
    struct if_msghdr    *ifm;
    struct sockaddr_dl    *sdl;
    
    mib[0] = CTL_NET;
    mib[1] = AF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_LINK;
    mib[4] = NET_RT_IFLIST;
    
    if ((mib[5] = if_nametoindex("en0")) == 0) {
        printf("Error: if_nametoindex error/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 1/n");
        return NULL;
    }
    
    if ((buf = malloc(len)) == NULL) {
        printf("Could not allocate memory. error!/n");
        return NULL;
    }
    
    if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 2");
        free(buf);
        return NULL;
    }
    
    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    // NSString *outstring = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    NSString *outstring = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    
    free(buf);
    return [outstring uppercaseString];
}

@end

